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The Android Open Source Projectc24a8e62009-03-03 19:28:42 -08001/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
Dima Zavin4daf48a2011-08-30 11:59:20 -070017#include <stdbool.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080018#include <stdlib.h>
19#include <unistd.h>
20
21#include <fcntl.h>
22#include <stdio.h>
23
24#include <sys/ioctl.h>
25#include <sys/mman.h>
26#include <sys/types.h>
27
28#include <linux/fb.h>
29#include <linux/kd.h>
30
31#include <pixelflinger/pixelflinger.h>
32
Doug Zongker6fd59ac2013-03-06 15:01:11 -080033#include "font_10x18.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080034#include "minui.h"
35
Michael Ward9d1bcdf2011-06-22 14:30:34 -070036#if defined(RECOVERY_BGRA)
37#define PIXEL_FORMAT GGL_PIXEL_FORMAT_BGRA_8888
38#define PIXEL_SIZE 4
39#elif defined(RECOVERY_RGBX)
Doug Zongkerbe3e6f12011-01-13 16:43:44 -080040#define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGBX_8888
41#define PIXEL_SIZE 4
42#else
43#define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGB_565
44#define PIXEL_SIZE 2
45#endif
46
Devin Kim862d0262012-07-19 10:47:34 -070047#define NUM_BUFFERS 2
48
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080049typedef struct {
Doug Zongker55a36ac2013-03-04 15:49:02 -080050 GGLSurface* texture;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080051 unsigned cwidth;
52 unsigned cheight;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080053} GRFont;
54
55static GRFont *gr_font = 0;
56static GGLContext *gr_context = 0;
57static GGLSurface gr_font_texture;
Devin Kim862d0262012-07-19 10:47:34 -070058static GGLSurface gr_framebuffer[NUM_BUFFERS];
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080059static GGLSurface gr_mem_surface;
60static unsigned gr_active_fb = 0;
Octavian Purdila0e348802011-07-01 17:57:45 +030061static unsigned double_buffering = 0;
Doug Zongkerc560a672012-12-18 16:31:27 -080062static int overscan_percent = OVERSCAN_PERCENT;
63static int overscan_offset_x = 0;
64static int overscan_offset_y = 0;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080065
66static int gr_fb_fd = -1;
67static int gr_vt_fd = -1;
68
69static struct fb_var_screeninfo vi;
Michael Ward9d1bcdf2011-06-22 14:30:34 -070070static struct fb_fix_screeninfo fi;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080071
72static int get_framebuffer(GGLSurface *fb)
73{
74 int fd;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080075 void *bits;
76
77 fd = open("/dev/graphics/fb0", O_RDWR);
78 if (fd < 0) {
79 perror("cannot open fb0");
80 return -1;
81 }
82
Michael Ward3dbe66b2011-06-23 19:28:53 -070083 if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080084 perror("failed to get fb0 info");
85 close(fd);
86 return -1;
87 }
88
Michael Ward3dbe66b2011-06-23 19:28:53 -070089 vi.bits_per_pixel = PIXEL_SIZE * 8;
90 if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_BGRA_8888) {
91 vi.red.offset = 8;
92 vi.red.length = 8;
93 vi.green.offset = 16;
94 vi.green.length = 8;
95 vi.blue.offset = 24;
96 vi.blue.length = 8;
97 vi.transp.offset = 0;
98 vi.transp.length = 8;
99 } else if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_RGBX_8888) {
100 vi.red.offset = 24;
101 vi.red.length = 8;
102 vi.green.offset = 16;
103 vi.green.length = 8;
104 vi.blue.offset = 8;
105 vi.blue.length = 8;
106 vi.transp.offset = 0;
107 vi.transp.length = 8;
108 } else { /* RGB565*/
109 vi.red.offset = 11;
110 vi.red.length = 5;
111 vi.green.offset = 5;
112 vi.green.length = 6;
113 vi.blue.offset = 0;
114 vi.blue.length = 5;
115 vi.transp.offset = 0;
116 vi.transp.length = 0;
117 }
118 if (ioctl(fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
119 perror("failed to put fb0 info");
120 close(fd);
121 return -1;
122 }
123
124 if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800125 perror("failed to get fb0 info");
126 close(fd);
127 return -1;
128 }
129
130 bits = mmap(0, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
131 if (bits == MAP_FAILED) {
132 perror("failed to mmap framebuffer");
133 close(fd);
134 return -1;
135 }
136
Doug Zongkerc560a672012-12-18 16:31:27 -0800137 overscan_offset_x = vi.xres * overscan_percent / 100;
138 overscan_offset_y = vi.yres * overscan_percent / 100;
139
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800140 fb->version = sizeof(*fb);
141 fb->width = vi.xres;
142 fb->height = vi.yres;
Michael Ward9d1bcdf2011-06-22 14:30:34 -0700143 fb->stride = fi.line_length/PIXEL_SIZE;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800144 fb->data = bits;
Doug Zongkerbe3e6f12011-01-13 16:43:44 -0800145 fb->format = PIXEL_FORMAT;
Michael Ward9d1bcdf2011-06-22 14:30:34 -0700146 memset(fb->data, 0, vi.yres * fi.line_length);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800147
148 fb++;
149
Octavian Purdila0e348802011-07-01 17:57:45 +0300150 /* check if we can use double buffering */
151 if (vi.yres * fi.line_length * 2 > fi.smem_len)
152 return fd;
153
154 double_buffering = 1;
155
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800156 fb->version = sizeof(*fb);
157 fb->width = vi.xres;
158 fb->height = vi.yres;
Michael Ward9d1bcdf2011-06-22 14:30:34 -0700159 fb->stride = fi.line_length/PIXEL_SIZE;
160 fb->data = (void*) (((unsigned) bits) + vi.yres * fi.line_length);
Doug Zongkerbe3e6f12011-01-13 16:43:44 -0800161 fb->format = PIXEL_FORMAT;
Michael Ward9d1bcdf2011-06-22 14:30:34 -0700162 memset(fb->data, 0, vi.yres * fi.line_length);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800163
164 return fd;
165}
166
167static void get_memory_surface(GGLSurface* ms) {
168 ms->version = sizeof(*ms);
169 ms->width = vi.xres;
170 ms->height = vi.yres;
Michael Ward9d1bcdf2011-06-22 14:30:34 -0700171 ms->stride = fi.line_length/PIXEL_SIZE;
172 ms->data = malloc(fi.line_length * vi.yres);
Doug Zongkerbe3e6f12011-01-13 16:43:44 -0800173 ms->format = PIXEL_FORMAT;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800174}
175
176static void set_active_framebuffer(unsigned n)
177{
Octavian Purdila0e348802011-07-01 17:57:45 +0300178 if (n > 1 || !double_buffering) return;
Devin Kim862d0262012-07-19 10:47:34 -0700179 vi.yres_virtual = vi.yres * NUM_BUFFERS;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800180 vi.yoffset = n * vi.yres;
Doug Zongkerbe3e6f12011-01-13 16:43:44 -0800181 vi.bits_per_pixel = PIXEL_SIZE * 8;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800182 if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
183 perror("active fb swap failed");
184 }
185}
186
187void gr_flip(void)
188{
189 GGLContext *gl = gr_context;
190
191 /* swap front and back buffers */
Octavian Purdila0e348802011-07-01 17:57:45 +0300192 if (double_buffering)
193 gr_active_fb = (gr_active_fb + 1) & 1;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800194
195 /* copy data from the in-memory surface to the buffer we're about
196 * to make active. */
197 memcpy(gr_framebuffer[gr_active_fb].data, gr_mem_surface.data,
Michael Ward9d1bcdf2011-06-22 14:30:34 -0700198 fi.line_length * vi.yres);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800199
200 /* inform the display driver */
201 set_active_framebuffer(gr_active_fb);
202}
203
204void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
205{
206 GGLContext *gl = gr_context;
207 GGLint color[4];
208 color[0] = ((r << 8) | r) + 1;
209 color[1] = ((g << 8) | g) + 1;
210 color[2] = ((b << 8) | b) + 1;
211 color[3] = ((a << 8) | a) + 1;
212 gl->color4xv(gl, color);
213}
214
215int gr_measure(const char *s)
216{
217 return gr_font->cwidth * strlen(s);
218}
219
Dima Zavin3c7f00e2011-08-30 11:58:24 -0700220void gr_font_size(int *x, int *y)
221{
222 *x = gr_font->cwidth;
223 *y = gr_font->cheight;
224}
225
Vojtech Bocek65fdcdd2013-09-06 21:32:22 +0200226int gr_text(int x, int y, const char *s, ...)
227{
228 return gr_text_impl(x, y, s, 0);
229}
230
231int gr_text_impl(int x, int y, const char *s, int bold)
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800232{
233 GGLContext *gl = gr_context;
234 GRFont *font = gr_font;
235 unsigned off;
236
Doug Zongker55a36ac2013-03-04 15:49:02 -0800237 if (!font->texture) return x;
238
Doug Zongker6fd59ac2013-03-06 15:01:11 -0800239 bold = bold && (font->texture->height != font->cheight);
240
Doug Zongkerc560a672012-12-18 16:31:27 -0800241 x += overscan_offset_x;
242 y += overscan_offset_y;
243
Doug Zongker55a36ac2013-03-04 15:49:02 -0800244 gl->bindTexture(gl, font->texture);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800245 gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
246 gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
247 gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
248 gl->enable(gl, GGL_TEXTURE_2D);
249
250 while((off = *s++)) {
251 off -= 32;
252 if (off < 96) {
Doug Zongker6fd59ac2013-03-06 15:01:11 -0800253 gl->texCoord2i(gl, (off * font->cwidth) - x,
254 (bold ? font->cheight : 0) - y);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800255 gl->recti(gl, x, y, x + font->cwidth, y + font->cheight);
256 }
257 x += font->cwidth;
258 }
259
260 return x;
261}
262
Doug Zongker02ec6b82012-08-22 17:26:40 -0700263void gr_texticon(int x, int y, gr_surface icon) {
Doug Zongker52eeea4f2012-09-04 14:28:25 -0700264 if (gr_context == NULL || icon == NULL) {
265 return;
266 }
Doug Zongker02ec6b82012-08-22 17:26:40 -0700267 GGLContext* gl = gr_context;
268
Doug Zongkerc560a672012-12-18 16:31:27 -0800269 x += overscan_offset_x;
270 y += overscan_offset_y;
271
Doug Zongker02ec6b82012-08-22 17:26:40 -0700272 gl->bindTexture(gl, (GGLSurface*) icon);
273 gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
274 gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
275 gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
276 gl->enable(gl, GGL_TEXTURE_2D);
277
278 int w = gr_get_width(icon);
279 int h = gr_get_height(icon);
280
281 gl->texCoord2i(gl, -x, -y);
282 gl->recti(gl, x, y, x+gr_get_width(icon), y+gr_get_height(icon));
283}
284
Doug Zongkerc560a672012-12-18 16:31:27 -0800285void gr_fill(int x1, int y1, int x2, int y2)
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800286{
Doug Zongkerc560a672012-12-18 16:31:27 -0800287 x1 += overscan_offset_x;
288 y1 += overscan_offset_y;
289
290 x2 += overscan_offset_x;
291 y2 += overscan_offset_y;
292
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800293 GGLContext *gl = gr_context;
294 gl->disable(gl, GGL_TEXTURE_2D);
Doug Zongkerc560a672012-12-18 16:31:27 -0800295 gl->recti(gl, x1, y1, x2, y2);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800296}
297
298void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) {
Doug Zongker52eeea4f2012-09-04 14:28:25 -0700299 if (gr_context == NULL || source == NULL) {
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800300 return;
301 }
302 GGLContext *gl = gr_context;
303
Doug Zongkerc560a672012-12-18 16:31:27 -0800304 dx += overscan_offset_x;
305 dy += overscan_offset_y;
306
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800307 gl->bindTexture(gl, (GGLSurface*) source);
308 gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
309 gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
310 gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
311 gl->enable(gl, GGL_TEXTURE_2D);
312 gl->texCoord2i(gl, sx - dx, sy - dy);
313 gl->recti(gl, dx, dy, dx + w, dy + h);
314}
315
316unsigned int gr_get_width(gr_surface surface) {
317 if (surface == NULL) {
318 return 0;
319 }
320 return ((GGLSurface*) surface)->width;
321}
322
323unsigned int gr_get_height(gr_surface surface) {
324 if (surface == NULL) {
325 return 0;
326 }
327 return ((GGLSurface*) surface)->height;
328}
329
330static void gr_init_font(void)
331{
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800332 gr_font = calloc(sizeof(*gr_font), 1);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800333
Doug Zongker55a36ac2013-03-04 15:49:02 -0800334 int res = res_create_surface("font", (void**)&(gr_font->texture));
Doug Zongker6fd59ac2013-03-06 15:01:11 -0800335 if (res == 0) {
336 // The font image should be a 96x2 array of character images. The
337 // columns are the printable ASCII characters 0x20 - 0x7f. The
338 // top row is regular text; the bottom row is bold.
339 gr_font->cwidth = gr_font->texture->width / 96;
340 gr_font->cheight = gr_font->texture->height / 2;
341 } else {
Doug Zongker55a36ac2013-03-04 15:49:02 -0800342 printf("failed to read font: res=%d\n", res);
Doug Zongker6fd59ac2013-03-06 15:01:11 -0800343
344 // fall back to the compiled-in font.
345 gr_font->texture = malloc(sizeof(*gr_font->texture));
346 gr_font->texture->width = font.width;
347 gr_font->texture->height = font.height;
348 gr_font->texture->stride = font.width;
349
350 unsigned char* bits = malloc(font.width * font.height);
351 gr_font->texture->data = (void*) bits;
352
353 unsigned char data;
354 unsigned char* in = font.rundata;
355 while((data = *in++)) {
356 memset(bits, (data & 0x80) ? 255 : 0, data & 0x7f);
357 bits += (data & 0x7f);
358 }
359
360 gr_font->cwidth = font.cwidth;
361 gr_font->cheight = font.cheight;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800362 }
363
Doug Zongker55a36ac2013-03-04 15:49:02 -0800364 // interpret the grayscale as alpha
365 gr_font->texture->format = GGL_PIXEL_FORMAT_A_8;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800366}
367
368int gr_init(void)
369{
370 gglInit(&gr_context);
371 GGLContext *gl = gr_context;
372
373 gr_init_font();
374 gr_vt_fd = open("/dev/tty0", O_RDWR | O_SYNC);
375 if (gr_vt_fd < 0) {
376 // This is non-fatal; post-Cupcake kernels don't have tty0.
377 perror("can't open /dev/tty0");
378 } else if (ioctl(gr_vt_fd, KDSETMODE, (void*) KD_GRAPHICS)) {
379 // However, if we do open tty0, we expect the ioctl to work.
380 perror("failed KDSETMODE to KD_GRAPHICS on tty0");
381 gr_exit();
382 return -1;
383 }
384
385 gr_fb_fd = get_framebuffer(gr_framebuffer);
386 if (gr_fb_fd < 0) {
387 gr_exit();
388 return -1;
389 }
390
391 get_memory_surface(&gr_mem_surface);
392
Doug Zongkerfafc85b2013-07-09 12:29:45 -0700393 printf("framebuffer: fd %d (%d x %d)\n",
394 gr_fb_fd, gr_framebuffer[0].width, gr_framebuffer[0].height);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800395
396 /* start with 0 as front (displayed) and 1 as back (drawing) */
397 gr_active_fb = 0;
398 set_active_framebuffer(0);
399 gl->colorBuffer(gl, &gr_mem_surface);
400
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800401 gl->activeTexture(gl, 0);
402 gl->enable(gl, GGL_BLEND);
403 gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA);
404
Doug Zongkerf6abd402011-09-27 13:09:48 -0700405 gr_fb_blank(true);
406 gr_fb_blank(false);
407
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800408 return 0;
409}
410
411void gr_exit(void)
412{
413 close(gr_fb_fd);
414 gr_fb_fd = -1;
415
416 free(gr_mem_surface.data);
417
418 ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT);
419 close(gr_vt_fd);
420 gr_vt_fd = -1;
421}
422
423int gr_fb_width(void)
424{
Doug Zongkerc560a672012-12-18 16:31:27 -0800425 return gr_framebuffer[0].width - 2*overscan_offset_x;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800426}
427
428int gr_fb_height(void)
429{
Doug Zongkerc560a672012-12-18 16:31:27 -0800430 return gr_framebuffer[0].height - 2*overscan_offset_y;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800431}
432
433gr_pixel *gr_fb_data(void)
434{
435 return (unsigned short *) gr_mem_surface.data;
436}
Dima Zavin4daf48a2011-08-30 11:59:20 -0700437
438void gr_fb_blank(bool blank)
439{
Matt Mower4a5db2d2014-01-20 16:14:25 -0600440#if defined(TW_NO_SCREEN_BLANK) && defined(TW_BRIGHTNESS_PATH) && defined(TW_MAX_BRIGHTNESS)
Ethan Chen0940e412013-10-22 13:48:50 -0700441 int fd;
Matt Mower4a5db2d2014-01-20 16:14:25 -0600442 char brightness[4];
443 snprintf(brightness, 4, "%03d", TW_MAX_BRIGHTNESS/2);
Ethan Chen0940e412013-10-22 13:48:50 -0700444
Matt Mower4a5db2d2014-01-20 16:14:25 -0600445 fd = open(TW_BRIGHTNESS_PATH, O_RDWR);
Ethan Chen0940e412013-10-22 13:48:50 -0700446 if (fd < 0) {
447 perror("cannot open LCD backlight");
448 return;
449 }
Matt Mower4a5db2d2014-01-20 16:14:25 -0600450 write(fd, blank ? "000" : brightness, 3);
Ethan Chen0940e412013-10-22 13:48:50 -0700451 close(fd);
452#else
Dima Zavin4daf48a2011-08-30 11:59:20 -0700453 int ret;
454
455 ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
456 if (ret < 0)
457 perror("ioctl(): blank");
Ethan Chen0940e412013-10-22 13:48:50 -0700458#endif
Dima Zavin4daf48a2011-08-30 11:59:20 -0700459}